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Updated: Feb 6, 2026
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Simultaneous Synthesis of Single-walled Carbon Nanotubes and Graphene in a Magnetically-enhanced Arc Plasma
Published on: February 2, 2012
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Tunable intrinsic magnetic phase transition in pristine single-layer graphene nanoribbons
Santhosh Sivasubramani1, Sanghamitra Debroy1, Swati Ghosh Acharyya2
1Advanced Embedded Systems and IC Design Laboratory, Department of Electrical Engineering, Indian Institute of Technology-Hyderabad, India.
Nanotechnology
|August 25, 2018
Summary
This study reveals that electric fields and temperature control magnetic phase transitions in graphene nanoribbons, enabling tunable magnetism for advanced electronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Graphene nanoribbons (GNRs) exhibit unique electronic and magnetic properties.
- Controlling magnetism in GNRs is crucial for spintronic applications.
Purpose of the Study:
- Investigate magnetic phase transitions (MPTs) in pristine single-layer zigzag graphene nanoribbons (szGNRs) under electric fields (E) and temperature (T).
- Explore the thermo-electromagnetic effect and tunable magnetic behaviors in szGNRs.
Main Methods:
- Utilized Density Functional Theory (DFT)-based first-principles calculations.
- Analyzed intrinsic magnetic properties and positional parameters of MPTs.
Main Results:
- Demonstrated the ability to tune szGNRs between paramagnetic, ferromagnetic, and antiferromagnetic states by varying E and T.
- Identified positional trends in MPTs and their dependence on GNR size, E, and T.
- Proposed a bow-tie schematic for inducing magnetism and a processor application model.
Conclusions:
- Pristine szGNRs exhibit controllable intrinsic magnetism via electric fields and temperature.
- This research provides fundamental insights for developing graphene-based spintronic devices, including MRAM and quantum computing components.
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